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ng ngy 17 Thng chn 2012 #1

Bi 10: Giao tip vi DS18B20Tho lun trong 'Cc Bi Hc 8051 Trn KIT DIY 89S52 V3' bt u bi NguyenQuyNhat, 17 Thng chn 2012.

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hungbka53

XIN CHO CC BN!Trong bi vit ny ti xin trnh by bi ton o v hin th gi tr nhit ln LCD1602 s dng DS18b20.I.CU TO V NHNG C TNH K THUT CA DS18B20.1.CU TO.Cm bin o nhit DS18b20 s dng chun giao tip 1 WIRE (ng dn tn hiu v ng dn in p ngun nui c th dngchung trn mt dy dn). Ngoi ra, nhiu cm bin c th dng chung trn mt ng dn (Rt thch hp vi cc ng dng o lng aim).Cm bin DS18b20 thng dng gm c 3 chn: VCC, GND, DATA nh hnh di:

S kt ni:

2.C TNH K THUT.Cc c im k thut ca cm bin DS1820 c th k ra mt cch tm tt nh sau: phn gii khi o nhit l 9 bit . Di o nhit -55oC n 125oC, tng bc 0,5oC, c th t chnh xc n 0,1oC bng vichiu chnh qua phn mm (C th t n cc phn gii 10 bit, 11 bit, 12 bit).in p ngun nui c th thay i trong khong rng (t 3,0 V n 5,5 V).Dng tiu th ti ch ngh cc nh.Thi gian ly mu v bin i thnh s tng i nhanh, khng qu 200 ms.

Trang ch Din n Th Vin VideoNgn Hng Thnh vin hungbka53

Trang ch Din n MCU Vi iu Khin 8051 Cc Bi Hc 8051 Trn KIT DIY 89S52 V3

1

NguyenQuyNhat

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nh du c tt c din nnh du c tt c din n Tm kim din nTm kim din n Ch ang theo diCh ang theo di C g mi?C g mi?

Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

1 of 11 4/21/2014 9:14 PM

Mi cm bin c mt m nh danh duy nht 64 bit cha trong b nh ROM trn chip (on chip).

II.LP TRNH O NHIT VI VI IU KHIN 89S52.Khi x l DS18b20, cc bn cn ch ti 2 nhm lnh (C th c th xem datasheet DS18b20):Lnh truy cp ROMLnh chc nng b nh.Trong bi tp ny, x l c nhit o c t DS18b20 cc bn cn quan tm hm:-float ds18b20_readtemp(void): y l hm gip cc bn tnh ton v tr v gi tr nhit m DS18b2 o c.

HTML:

float ds18b20_readtemp(void){ float temp; unsigned char a,b; DS18B20_Init(); // Khoi tao DS18b20 ds18b20_writebyte(0xCC) ; // Cho phep VDK truy cap thang den cac lenh bo nho cua DS18b20 ds18b20_writebyte(0x44) ; // Khoi dong qua trinh do va chuyen doi nhiet do ra so nhi phan DS18B20_Init() ; ds18b20_writebyte(0xCC) ; ds18b20_writebyte(0xBE) ; // Cho phep doc du lieu tu bo nho DS18b20 ra ngoai a = ds18b20_readbyte(); temp=((float)(a&0x0f))/16; // Lay phan thuc cua gia tri nhiet do b = ds18b20_readbyte(); a =((a&0xf0)>>4)|((b&0x0f)

Kch thc: 57.3 KBc: 1,062

Code_Test.zip

liverpool1, thaiban, vxd_gtvt_mylove and 2 others like this.

ng ngy 6 Thng mi 2012 #2

ng ngy 6 Thng mi 2012 #3

Cc bn c th download code mu c th v m phng ti y:

Cc file nh km:

Name : Nguyn Qu NhtMail :Tel :

Address : Sc Sn, H Ni.

------ ...N Cha Mt S Nghip, N M Mt Nng Du... -----

tk a.neu co mach mo phong dung kit pic thi hay.e muon nghien cuu ve con do co!vxd_gtvt_mylove

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quang.dt7bk

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Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

3 of 11 4/21/2014 9:14 PM

ng ngy 9 Thng mi 2012 #4

ng ngy 9 Thng mi 2012 #5

ng ngy 16 Thng mi 2012 #6

vxd_gtvt_mylove said:

tk a.neu co mach mo phong dung kit pic thi hay.e muon nghien cuu ve con do co!

Bn c th qua mc vi iu khiernr PIC tham kho thm bn nh!

Mnh thch ci Video!

nhng n s dng pic 16f877a t ngon a a`.nhin cung dep qu

Anh i cho em hi. Em c vit Code cho Atmega16 vs Ds18b20,nhng vit cho 1 con Ds18b20 th ok. nhiu con ni vo 1dy th ko c,n ton bo l ch tm thy 1 con cm bin thi . anh c th huong dn em code phn c ko. emdng codevisionavr. thanks a lot

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pro9x

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Luong Xuan Hoa

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Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

4 of 11 4/21/2014 9:14 PM

ng ngy 18 Thng mi 2012 #7

ng ngy 20 Thng mi 2012 #8

ng ngy 20 Thng mi 2012 #9

ha thn thch bi ny.

ng ngy 26 Thng mi 2012 #10

Cho anh, em ch l user thi khng bit lp trnh, em mun hi ci ny:Vi kit V3 ny mnh c th o nhit ti 3 im (trong CPU chng hn), hin th trn 3 led 7 on loi 4 s ( chc phim rng thm ) hoc trn 2 thanh led 7 on trn kit v trn LCD c khng . Nu c th cn phi mua thm nhngg v anh c th lp trnh np sn vo kit c khng , ch hi m ca anh!

Bn mnh ang test code, ok th s up ln cc bn tham kho!

Mr. Tng

T: 0973.943.752Mail: tung.lvan@minhhagroup.comWeb: http://banlinhkien.vn

tung.lvan said:

Bn mnh ang test code, ok th s up ln cc bn tham kho!

ngon ri. thanks ad. ang rt cn ci ny

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thuan0780

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quang.dt7bk

Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

5 of 11 4/21/2014 9:14 PM

ng ngy 26 Thng mi 2012 #11

ng ngy 27 Thng mi 2012 #12

liverpool1 thch bi ny.

ng ngy 27 Thng mt 2013 #13

Luong Xuan Hoa said:

ngon ri. thanks ad. ang rt cn ci ny

Mnh c code test ri, bn vo tham kho v gp thm nh:

http://mcu.banlinhkien.vn/threads/o-lng-a-im-vi-ds18b20.112/

Luong Xuan Hoa said:

Anh i cho em hi. Em c vit Code cho Atmega16 vs Ds18b20,nhng vit cho 1 con Ds18b20 th ok. nhiu con ni vo 1 dy th ko

c,n ton bo l ch tm thy 1 con cm bin thi . anh c th huong dn em code phn c ko. em dng codevisionavr.

thanks a lot

Em vo y tham kho nh!http://mcu.banlinhkien.vn/threads/o-lng-a-im-vi-ds18b20.112/

Mr. TngT: 0973.943.752

Mail: tung.lvan@minhhagroup.comWeb: http://banlinhkien.vn

pro9x said:

Mnh thch ci Video!

Mnh lm video nn mnh thch cmt ca bn c thm topic vs video v o lng a im vi DS18B20 nh

Phn mm LEDMH V1.1

em o m ln nh chng l em mi hon thnh ci kit DIY em chy dc code o nhit v hin th lcd thnh

Nhm MCU

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tung.lvan

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NamKira

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Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

6 of 11 4/21/2014 9:14 PM

ng ngy 27 Thng mt 2013 #14

cng nay em mun i my ci ch MINHAGROUP thnh tn e c th tu chnh dc ch theo mnh e chnh th nynhng khi chy m phng v chy thc lcd n ko hin th ci g ht ai rnh xem gip em on code :/********************************************************************************* Ten Tep: Main.h* Tac Gia: LE ANH QUANG* Cong Ty:MinhHaGroup*Website:MinhHaGroup.com* Phien Ban:V1.0.0* Ngay: 20-09-2012* Tom Tat : Khai bao thu vien su dungDinh nghia cac GPIO duoc su dung********************************************************************************* Chu Y:********************************************************************************/

#include

void main(){float Nhiet_Do;unsigned char Lcd_Buff[15];

lcd1602_init();lcd1602_clear();lcd1602_gotoxy(0,0);lcd1602_puts(" WELLCOM TO..! ");lcd1602_gotoxy(0,1);lcd1602_puts(" KIMMAN ");delay_ms(2000);lcd1602_clear();lcd1602_gotoxy(0,0);lcd1602_puts(" KIMMAN.VN");

while(1){Nhiet_Do = ds18b20_readtemp();sprintf(Lcd_Buff," TEMP: %2.2f^C",Nhiet_Do);lcd1602_gotoxy(0,1);lcd1602_puts(Lcd_Buff);delay_ms(300);}

}// ------------------END OF FILE--------------------// -------------------------------------------------

kimman1 said:

em o m ln nh chng l em mi hon thnh ci kit DIY em chy dc code o nhit v hin th lcd thnh cng nay em muni my ci ch MINHAGROUP thnh tn e c th tu chnh dc ch theo mnh e chnh th ny nhng khi chy m phng v chythc lcd n ko hin th ci g ht ai rnh xem gip em on code :

kimman1

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Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

7 of 11 4/21/2014 9:14 PM

ng ngy 27 Thng mt 2013 #15

/**

******************************************************************************* Ten Tep: Main.h* Tac Gia: LE ANH QUANG* Cong Ty:MinhHaGroup*Website:MinhHaGroup.com* Phien Ban:V1.0.0* Ngay: 20-09-2012* Tom Tat : Khai bao thu vien su dungDinh nghia cac GPIO duoc su dung********************************************************************************* Chu Y:********************************************************************************/

#include

void main(){float Nhiet_Do;unsigned char Lcd_Buff[15];

lcd1602_init();lcd1602_clear();lcd1602_gotoxy(0,0);lcd1602_puts(" WELLCOM TO..! ");lcd1602_gotoxy(0,1);lcd1602_puts(" KIMMAN ");delay_ms(2000);lcd1602_clear();lcd1602_gotoxy(0,0);lcd1602_puts(" KIMMAN.VN");

while(1){Nhiet_Do = ds18b20_readtemp();sprintf(Lcd_Buff," TEMP: %2.2f^C",Nhiet_Do);lcd1602_gotoxy(0,1);lcd1602_puts(Lcd_Buff);delay_ms(300);}

}// ------------------END OF FILE--------------------// -------------------------------------------------

Cho bn!Bn up ton b file code ca bn ln nh.

kimman1 said:

em o m ln nh chng l em mi hon thnh ci kit DIY em chy dc code o nhit v hin th lcd thnh cng nay em muni my ci ch MINHAGROUP thnh tn e c th tu chnh dc ch theo mnh e chnh th ny nhng khi chy m phng v chythc lcd n ko hin th ci g ht ai rnh xem gip em on code :/********************************************************************************* Ten Tep: Main.h* Tac Gia: LE ANH QUANG* Cong Ty:MinhHaGroup*Website:MinhHaGroup.com* Phien Ban:V1.0.0* Ngay: 20-09-2012

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Bi 10: Giao tip vi DS18B20 | Din n Vi iu Khin http://mcu.banlinhkien.vn/threads/bi-10-giao-tip-vi-ds18b20.32/

8 of 11 4/21/2014 9:14 PM

ngocanhld2802 thch bi ny.

ng ngy 27 Thng mt 2013 #16

Kch thc: 23.8 KBc: 100

lcd.rar

* Tom Tat : Khai bao thu vien su dung

Dinh nghia cac GPIO duoc su dung********************************************************************************* Chu Y:********************************************************************************/

#include

void main(){float Nhiet_Do;unsigned char Lcd_Buff[15];

lcd1602_init();lcd1602_clear();lcd1602_gotoxy(0,0);lcd1602_puts(" WELLCOM TO..! ");lcd1602_gotoxy(0,1);lcd1602_puts(" KIMMAN ");delay_ms(2000);lcd1602_clear();lcd1602_gotoxy(0,0);lcd1602_puts(" KIMMAN.VN");

while(1){Nhiet_Do = ds18b20_readtemp();sprintf(Lcd_Buff," TEMP: %2.2f^C",Nhiet_Do);lcd1602_gotoxy(0,1);lcd1602_puts(Lcd_Buff);delay_ms(300);}

}// ------------------END OF FILE--------------------// -------------------------------------------------

Cho bn!Bn gi c file m phng v code bn sa km file nh!

Mr. TngT: 0973.943.752Mail: tung.lvan@minhhagroup.comWeb: http://banlinhkien.vn

y n mi ngi c c file m phng

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kimman1

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9 of 11 4/21/2014 9:14 PM

ng ngy 27 Thng mt 2013 #17

ng ngy 28 Thng mt 2013 #18

ng ngy 28 Thng mt 2013 #19

ng ngy 28 Thng mt 2013 #20

kimman1 said:

y n mi ngi c c file m phng

Mnh khng m c file Project ca bn "man.uv2". Bn xem bin dch c ra file hex cha, c xut hin li gkhng nh!Hoc bn down li code v chnh sa li ri bin dch li xem nh!

Mr. TngEmail: tung.lvan@minhhagroup.comTell: 0973.943.752Web: minhhagroup.com - banlinhkien.vn

" Thnh cng t chnh bn thn mnh"

admin said:

Mnh khng m c file Project ca bn "man.uv2". Bn xem bin dch c ra file hex cha, c xut hin li g khng nh!Hoc bn down li code v chnh sa li ri bin dch li xem nh!

bc cm phin xem gip em ci file .c i em ko hiu sao ci my ca em e gi n vo file rar th b li file man.uv2

Bn rar c foder nh!File.C th ko sai g c. Mnh ngh bn sai khi bin dch ra file hex.

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admin

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10 of 11 4/21/2014 9:14 PM

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tung.lvan said:

Bn rar c foder nh!File.C th ko sai g c. Mnh bn sai khi bin dch ra file hex.

Ba n anh Tng cho mnh ci code ca 18b20 mnh lm pht c lun m

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